Oral on him

I haven’t been into the thought sucking on my bfs penis so I haven’t. He hasn’t asked or pressured me for it. He always waits until I tell him or show him I’m ready for something. The idea of it still isn’t that pleasant but I would like to try it just to see. Any tips on how to? Things I definitely shouldn’t do? Things he may like?

And because he hasn’t asked for it how do I bring up that it’s now an option with him comfortably. I overthink a lot, he tell me this😂 but I don’t just want to blurt out that I can suck his dick.